Thread: 302 sbc, Cimmaron?

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The only 302s that Chevy had that I know of are the DZ engines . This was a 4" bore 3" stroke (1967 S/J and 68/69 L/J )11.0.1 C/R Forged pistons and crank short block . 2.02 in/1.60ex valves double-hump heads .And this engine had a special 455 / 481 Lift solid-lifter #140 cam . They also had a 780 CFM Holley with a factory aluminum high-rise .This engine was rated at 290 HP . But I do think it was makeing more then that . There was a cross-ram intake . And it was a service part installed option #3940077 . This cross-ram intake ran two Holley 600CFM carbs . These engines and early Z-28s were made for Trans am road racing . But they also did run strong on the street and strip . I personally did see what they really could do . They were fast right out the box .